Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 23°F | 37°F | 30°F | 1.1" |
February | 27°F | 47°F | 36°F | 0.8" |
March | 31°F | 56°F | 42°F | 1.1" |
April | 36°F | 63°F | 49°F | 0.7" |
May | 44°F | 74°F | 58°F | 1.2" |
June | 51°F | 80°F | 64°F | 0.5" |
July | 57°F | 91°F | 73°F | 0.2" |
August | 56°F | 90°F | 71°F | 0.2" |
September | 47°F | 80°F | 62°F | 0.4" |
October | 38°F | 64°F | 49°F | 1.1" |
November | 30°F | 48°F | 38°F | 1.3" |
December | 22°F | 37°F | 29°F | 1.5" |
Index | Vantage | Washington | National |
Air quality index | 23 | 36 | 42 |
Pollution index | 2,683,410 | 4,541,850 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 305 |
Days with moderate air quality | 60 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.040% |
Carbon Tetrachloride | 0.004% |
Lead | 0.030% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
George, WA | 823 | 18 | 64.0% |
Mattawa, WA | 5,040 | 38 | 24.0% |
Vantage, WA | 0 | 23 | 54.0% |
City | Population | Air Quality Index | National Avg. |
Chase, AK | 0 | 31 | 38.0% |
Chiniak, AK | 0 | 31 | 38.0% |
Chisana, AK | 0 | 31 | 38.0% |
Dot Lake, AK | 0 | 38 | 24.0% |
Eureka Roadhouse, AK | 0 | 31 | 38.0% |
Vantage, WA | 0 | 23 | 54.0% |